Medicare Secondary Payer Manual (Pub. 100-05), Ch. 3 § 20.1
General Policy
20.1 - General Policy
(Rev. 11874, Issued: 02-23-23, Effective: 03-24-23; Implementation: 03-24-23)
Based on the law and regulations, providers, physicians, and other suppliers are required to file
claims with Medicare using billing information obtained from the beneficiary to whom the item
or service is furnished. Section 1862(b)(6) of the Act, (42 USC 1395y(b)(6)), requires all
entities seeking payment for any item or service furnished under Part B to complete, on the
basis of information obtained from the individual to whom the item or service is furnished, the
portion of the claim form relating to the availability of other health insurance. Additionally, 42
CFR § 489.20(g) requires that all providers must agree “to bill other primary payers before
billing Medicare."
Thus, any providers, physicians, and other suppliers that bill Medicare for services rendered to
Medicare beneficiaries must determine whether or not Medicare is the primary payer for those
services. This must be accomplished by asking Medicare beneficiaries, or their representatives,
questions concerning the beneficiary's MSP status. Exceptions to this requirement are discussed
below in 1, 3 and 6. If providers, physicians or other suppliers fail to file correct and accurate
claims with Medicare, and a mistaken payment situation is later found to exist, 42 CFR § 411.24
permits Medicare to recover its conditional or mistaken payments.
Section 20.2.1 of this chapter, "Model Admission Questions to Ask Medicare Beneficiaries," is a
set of questions that may be used to determine the correct primary payers of claims for all
beneficiary services furnished by a hospital.
NOTE: Providers are required to determine whether Medicare is a primary or secondary payer
for each inpatient admission of a Medicare beneficiary and outpatient encounter with a
Medicare beneficiary prior to submitting a bill to Medicare. It must accomplish this by asking
the beneficiary about other insurance coverage. The model admission questions in section
20.2.1 of this chapter represent the types of questions that should be asked of Medicare
beneficiaries for every admission, outpatient encounter, or start of care. Exceptions to this
requirement are discussed below in 1, 3 and 6.
EXCEPTIONS
These questions may be asked in connection with online access to Common Working File
(CWF) or the X12 270 transmission and the X12 271 response. (See Section 20.2.) If the
provider lacks access to CWF, or does not have a copy of the 271 response, it will follow
the procedures found below in section 20.2.1. The X12 270 Transaction Set is used to
transmit Health Care Eligibility Benefit Inquiries from health care providers, insurers,
clearinghouses and other health care adjudication processors. The X12 270 Transaction
Set can be used to make an inquiry about the Medicare eligibility of an individual. The
X12 271 Transaction Set is the appropriate response mechanism for Health Care
Eligibility Benefit Inquiries.
NOTE: There may be situations where more than one payer is primary to Medicare (e.g.,
liability insurer and GHP). The provider, physician, or other supplier must identify all
possible payers.
This greatly increases the likelihood that the primary payer is billed correctly. Verifying
MSP information means confirming that the information previously furnished about the
presence or absence of another payer that may be primary to Medicare is correct, clear,
and complete, and that no changes have occurred
1. Policy for Hospital Reference Lab Services and Independent Reference Lab
Services
Background
Section 943 (TREATMENT OF HOSPITALS FOR CERTAIN SERVICES UNDER
MEDICARE SECONDARY PAYER (MSP) PROVISIONS) of the Medicare
Prescription Drug, Improvement & Modernization Act of 2003 states:
“(a) IN GENERAL. – The Secretary shall not require a hospital (including a critical
access hospital) to ask questions (or obtain information) relating to the application of
section 1862(b) of the Social Security Act (relating to Medicare Secondary Payer
provisions) in the case of reference lab services described in subsection (b), if the
Secretary does not impose such requirement in the case of such services furnished by an
independent laboratory.
“(b) REFERENCE LABORATORY SERVICES DESCRIBED. – Reference laboratory
services described in this subsection are clinical laboratory diagnostic tests (or the
interpretation of such tests, or both) furnished without a face-to-face encounter between
the individual entitled to benefits under part A or enrolled under part B, or both, and the
hospital involved and in which the hospital submits a claim only for such test or
interpretation.”
Policy
The Centers for Medicare & Medicaid Services (CMS) will not require independent reference
laboratories to collect MSP information in order to bill Medicare for reference laboratory
services as described in subsection (b) above. Therefore, pursuant to section 943 of The
Medicare Prescription Drug, Improvement & Modernization Act of 2003, CMS will not require
hospitals to collect MSP information in order to bill Medicare for reference laboratory services
as described in subsection (b) above. This policy, however, will not be a valid defense to
Medicare’s right to recover when a mistaken payment situation is later found to exist.
A/B MACs shall instruct hospital and independent labs, which have already collected and
retained MSP information for beneficiaries, that they may use that information for the
billing of non-face-to-face reference lab services. However, in situations when there is a
face-to-face encounter with the beneficiary, A/B MACs shall instruct hospitals and
independent labs that they are required to collect MSP information from the beneficiary
when billing for lab services.
Instructions to A/B MACs on how to process reference lab claims submitted on Form
CMS-1500 are available by clicking on the following hyperlink:
https://www.cms.gov/Regulations-and-
Guidance/Guidance/Manuals/Downloads/clm104c26pdf. (After you get to chapter 26,
go to section 10.2 which discusses reference lab services.)
2. Policy for Recurring Outpatient Services
Hospitals must collect MSP information from the beneficiary or his/her representative for
hospital outpatients receiving recurring services. Both the initial collection of MSP
information and any subsequent verification of this information must be obtained from
the beneficiary or his/her representative. Following the initial collection, the MSP
information should be verified once every 90 days. If the MSP information collected by
the hospital, from the beneficiary or his/her representative and used for billing, is no older
than 90 calendar days from the date the service was rendered, then that information may
be used to bill Medicare for recurring outpatient services furnished by hospitals. This
policy, however, will not be a valid defense to Medicare’s right to recover when a
mistaken payment situation is later found to exist.
NOTE: A Medicare beneficiary is considered to be receiving recurring services if he/she
receives identical services and treatments on an outpatient basis more than once within a
billing cycle.
Hospitals must be able to demonstrate that they collected MSP information from the
beneficiary or his/her representative, which is no older than 90 days, when submitting
bills for their Medicare patients. Acceptable documentation may be the last (dated)
update of the MSP information, either electronic or hardcopy.
3. Policy for Medicare Advantage (MA) Members
If the beneficiary is a member of an MA plan, hospitals are not required to ask the MSP
questions or to collect, maintain, or report this information.
4. Policy for MSP Retirement Dates
During the intake process, when a beneficiary cannot recall his/her precise retirement
date as it relates to coverage under a group health plan as a policyholder or cannot recall
the same information as it relates to his/her spouse, as applicable, hospitals must follow
the policy below.
When a beneficiary cannot recall his/her retirement date but knows it occurred prior to
his/her Medicare entitlement dates, as shown on his/her Medicare card, hospitals report
his/her Medicare A entitlement date as the date of retirement. If the beneficiary is a
dependent under his/her spouse's group health insurance and the spouse retired prior to
the beneficiary's Medicare Part A entitlement date, hospitals report the beneficiary's
Medicare entitlement date as his/her retirement date.
If the beneficiary worked beyond his/her Medicare A entitlement date, had coverage
under a group health plan during that time, and cannot recall his/her precise date of
retirement but the hospital determines it has been at least five years since the beneficiary
retired, the hospital enters the retirement date as five years retrospective to the date of
admission. (Example: Hospitals report the retirement date as January 4, 2016, if the date
of admission is January 4, 2021) As applicable, the same procedure holds for a spouse
who had retired at least five years prior to the date of the beneficiary's hospital admission.
If a beneficiary's (or spouse's, as applicable) retirement date occurred less than five years
ago, the hospital must obtain the retirement date from appropriate informational sources;
e.g., former employer or supplemental insurer.
5. Policy for Provider Records Retention of MSP Information
Title 42 CFR § 489.20(f) states that the provider agrees to maintain a system that, during
the admission process, identifies any primary payers other than Medicare, so that
incorrect billing and Medicare overpayments can be prevented. Based on this regulation,
hospitals must document and maintain MSP information for Medicare beneficiaries.
Without this documentation, the A/B MACs and DME MACs would have nothing to audit
submitted claims against. CMS recommends that providers retain MSP information for
10 years.
A. Obtain Liability or No-Fault Insurance Information
Providers are required to obtain information on possible MSP situations.
Medicare patients, or their representatives, at admission or start of care, are asked
if the services are for treatment of an injury or illness which resulted from an
automobile accident or other incident, for which liability or no- fault insurance
may pay, or for which another party is held responsible. This includes an incident
that occurs on the provider's premises. The provider obtains the name, address,
and policy number of any liability or no-fault insurance company or any
other party that may be responsible for payment of medical expenses that resulted
from the accident or illness.
B. Obtain Workers' Compensation (WC) Information
Providers are required to inquire of the beneficiary or representative at the time
hospitalization is ordered, at admission, or when the service is rendered, whether
the condition is work-related. When the patient or the patient's physician
indicates that the condition is work-related or there is other indication that it is
work-related, the provider is required to ask the patient or the patient's physician,
wherever possible, whether WC is expected to pay. (Generally, where hospital
services are covered under a WC program, the WC carrier or the employer will
authorize the services in advance.)
If the patient denies that WC benefits are payable for a condition which the
provider believes may be covered by WC, a supplementary statement is attached
to the billing form containing information about the circumstances of the accident
and the reasons it is claimed that WC benefits are not payable.
C. Obtain GHP Data from Working Aged Beneficiaries
To obtain the information needed to ascertain whether to bill a GHP as primary
payer, providers ask beneficiaries age 65 or over admitted for inpatient care or
receiving outpatient care, or their representatives, selected questions. See section
20.2.1 of this chapter for the model questionnaire. These include the age of the
beneficiary, the employment status of the beneficiary and the spouse, whether the
beneficiary is covered under a GHP because of the beneficiary's or the spouse's
current employment, and the patient's identification number and the name and
address of the GHP.
D. Obtain GHP Data from Disabled Beneficiaries
Providers are required to identify individuals who meet the disability provisions
by asking every Medicare beneficiary under age 65 if the individual has group
health coverage based on their own current employment status or the current
employment status of a family member. If the individual has such coverage, the
provider requests the name and address of the employer plan and the individual's
identification number and bills the plan for primary benefits, except where the
provider has information that clearly shows that the employer plan is not primary
payer. If the individual responds negatively to either question, or the provider has
otherwise determined that the employer plan is not primary payer, the provider
bills Medicare for primary benefits.
E. Obtain GHP Data from ESRD Beneficiaries
Health care providers identify beneficiaries who are entitled to Medicare based on
ESRD through information available to them (e.g., the beneficiary's Medicare
card) and to ascertain whether the services may be payable under a GHP during
the 30-month coordination period. Providers determine whether the services were
rendered in the coordination period by checking their own records, e.g.,
information contained on Form CMS-2728 or, if the potential Medicare payment
is $50 or more, with other providers or facilities, or the beneficiary's physician, if
necessary, to determine the date the individual started a regular course of dialysis
or the date the individual received a kidney transplant (or entered a hospital to
receive a transplant) or the date an individual began a course of home dialysis. If
the individual is in the 30-month coordination period, the provider asks if the
beneficiary is insured under a group health insurance plan of his or her own, or as
a family member. If the response is yes, the provider asks for the name and
address of the plan and the beneficiary's identification number. A coordination of
benefits (COB) period may be applicable even if an ESRD beneficiary or his (her)
spouse is not currently employed throughout the COB period. The beginning date
of a COB period is different when an individual receives a kidney transplant or
receives home dialysis than when an individual receives regular (outpatient)
dialysis (3-month waiting period).
If the information obtained does not indicate GHP coverage, the provider
annotates the bill to that effect (e.g., GHP coverage lapsed, benefits exhausted). If
the information indicates that GHP coverage exists, the provider obtains the
information indicated above from the beneficiary or the beneficiary's
representative.
6. Policy for Provider Based and Non-Provider Based Services, such as Ambulance
Services
Some hospitals offer provider-based services, such as a transfer ambulance service that is
affiliated with the hospital. The affiliated provider-based service does not need to repeat
the MSP questions if the beneficiary has already had their information verified by the
provider. In the above example, the hospital-affiliated ambulance provider does not need
to ask the MSP questions if the beneficiary is seen by the hospital admissions staff. The
admissions staff shall verify the beneficiary’s insurance information and it bills the
appropriate insurer for the ambulance service.
However, if the provider is an independent provider (such as if the ambulance provider
above were not affiliated with the hospital), then the independent provider is responsible
for verifying the correct information prior to billing for services.
For audit purposes, and to ensure that the provider has developed for other primary payer
coverage, the provider retains a record of the development or other information on which
it based its determination that Medicare is primary payer. See Pub. 100-05, Chapter 5 for
action to take where a claim is received for primary benefits and there is reason to
believe that Medicare may be secondary payer.